Finding mesh cycle stiffness in spur gear pair
Finding mesh cycle stiffness in spur gear pair
(OP)
Hello skilled engineers,
I'm trying to generate a plot of mesh stiffness in a spur gear pair as they rotate.
I've tried to do this using a static analysis by applying a moment T on the pinion while the gear rotates. Im measuring the rotation in both the pinion and gear, and the transmission error would be
TE = perfect rotation - measured rotation
and stiffness
K = T / TE
Am i right? I was nontheless hoping that this would give a periodic square plot showing the stiffness as different number of teeth comes into contact during the rotation.
I'm using surface to surface contact with penalty 0.2 and CPS8R elements. What have i not understood correctly?
I'm trying to generate a plot of mesh stiffness in a spur gear pair as they rotate.
I've tried to do this using a static analysis by applying a moment T on the pinion while the gear rotates. Im measuring the rotation in both the pinion and gear, and the transmission error would be
TE = perfect rotation - measured rotation
and stiffness
K = T / TE
Am i right? I was nontheless hoping that this would give a periodic square plot showing the stiffness as different number of teeth comes into contact during the rotation.
I'm using surface to surface contact with penalty 0.2 and CPS8R elements. What have i not understood correctly?





RE: Finding mesh cycle stiffness in spur gear pair
RE: Finding mesh cycle stiffness in spur gear pair
thank you for your interest.
As far as I understand, neglecting dynamic effects and looking quasi staticly at it should give reasonable results. The overall stiffness in the gear pair changes as different number of teeth come into contact and due to the points of contact moving along the teeth working flank.
RE: Finding mesh cycle stiffness in spur gear pair
When you say that you are applying a moment T on the pinion while the gear rotates, how exactly are you doing this?
RE: Finding mesh cycle stiffness in spur gear pair
I've tried both linear and quadratic elements. The linear are more stable, but i guess i need a heavily refined mesh in the contact areas?